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WO2018156058A1 - Connecteur pour instrument médical diagnostique - Google Patents

Connecteur pour instrument médical diagnostique Download PDF

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Publication number
WO2018156058A1
WO2018156058A1 PCT/RU2018/050024 RU2018050024W WO2018156058A1 WO 2018156058 A1 WO2018156058 A1 WO 2018156058A1 RU 2018050024 W RU2018050024 W RU 2018050024W WO 2018156058 A1 WO2018156058 A1 WO 2018156058A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
contact elements
nozzle
connecting part
receiving part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/RU2018/050024
Other languages
English (en)
Russian (ru)
Inventor
Роман Витальевич НЕРОНОВ
Александр Михайлович МЕЛЬНИК
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2018156058A1 publication Critical patent/WO2018156058A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/008—Articulations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/055—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances having rod-lens arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/58—Contacts spaced along longitudinal axis of engagement

Definitions

  • the present invention relates to connectors that can be used to connect components, in particular medical diagnostic devices used in medicine and veterinary medicine, such as a video endoscope, diaphanoscope, devices for fluorescence endoscopy, ultrasound endoscopy, laser endoscopic surgery, ZO! Endoscopy and high-frequency surgery.
  • medical diagnostic devices used in medicine and veterinary medicine
  • a video endoscope diaphanoscope
  • devices for fluorescence endoscopy such as a video endoscope, diaphanoscope, devices for fluorescence endoscopy, ultrasound endoscopy, laser endoscopic surgery, ZO! Endoscopy and high-frequency surgery.
  • a video endoscope usually consists of a rigid or flexible endoscopic nozzle designed to be guided into the patient’s body and equipped with a video camera or photomatrix at its distal end, a handle used to manipulate the endoscope from the doctor’s side, and a display or monitor device used to display the image of the patient’s body part to be examined.
  • a multi-contact electrical connector with a zero articulation-dismemberment force of a circular shape with electrical contacts located around the circumference of the connector is known.
  • an increase in the number of contacts of the plug and socket of the specified connector, each of which has a size of several millimeters in the circumferential direction of the connector leads to a significant increase in the diameter of the connecting part of the connector due to an increase in its perimeter in proportion to the number of placed contacts.
  • the perimeter of the connecting part will be about 120 mm, and its diameter will be, respectively, about 40 mm.
  • the use of the known connector does not allow for compact dimensions of its connecting part if it is used to connect the components of a medical diagnostic device.
  • the urgent task remains to create a connector for connecting diagnostic components, in particular, video endoscopic systems with removable interchangeable functional nozzles with various characteristics (length, diameter, controllability of the distal end, etc.) for diagnostic and surgical procedures that would ensure the connection of the nozzle with the control unit of the system so that, on the one hand, a large quantity of control signals, which would ensure broad universality of the system, and, on the other hand, would provide compactness and the ability to quickly replace the distal nozzle, including its “hot swap” directly during diagnostics without disconnecting the power source, as well as ease of management, disposability and low cost.
  • the above problem is solved by creating a connector that can be used, in particular, for connecting parts of a medical device for diagnostic and surgical manipulations, comprising a control unit and a removable distal nozzle attached to it, the nozzle and the control unit being detachable transmitting a large number of signals while ensuring compactness and ease of connection.
  • a connector for receiving and / or transmitting a plurality of signals comprising one connecting and receiving part being inserted one into another, while at least one row of mutually executed on the outer surface of the connecting part and on the inner surface of the receiving part the corresponding two or more contact elements, and the specified row or rows extend in the direction of the longitudinal axis of the connector at an angle to the specified axis, so that each subsequent longitudinal In the direction of the connector, the row contact element is offset from the previous contact element in radial direction inward of the connecting part and outside the receiving part of the connector.
  • each subsequent contact element in the longitudinal direction of the connector is offset relative to the previous contact element in the radial direction inside the connecting part, and accordingly, outside the receiving part of the connector, there is a gap between the corresponding contact elements of the connector during their connection, which allows to avoid friction between the contact elements, their premature closure in the process of connecting parts of the connector. In turn, this facilitates the connection of the connector and its subsequent disconnection, increases the life of the connector.
  • this arrangement of contact elements allows to increase their number, which can be provided at a given thickness, for example, at a given diameter, of the connecting part. This is due to the distribution of the contact elements simultaneously in the longitudinal and transverse directions, as opposed to their placement in only one cross section or only in the longitudinal direction. It should be noted that in practice, it may be necessary to place up to 40-50 contact elements with a limited diameter of the connecting part and the receiving part of the connector.
  • the proposed design of the connector of the diagnostic system together with the placement of electronic components in the control unit, makes it possible to use nozzles of various sizes and other parameters and to create diagnostic, in particular endoscopic systems with inexpensive removable, including disposable, interchangeable functional nozzles having various characteristics, such as length, diameter, controllability of the distal end of the nozzle, etc. for diagnostic and surgical procedures characterized by wide versatility and compactness.
  • the specified location of the contact elements of the connecting part of the nozzle connector allows you to place a large number of contact elements and ensure the transmission through them of the necessary number of electrical and information signals between the nozzle and the control unit of the diagnostic medical device, sufficient, including for transmitting image signals with high resolution, in particular, equal to or greater than 4K, while maintaining the compactness of the nozzle.
  • At least one of the contact elements provides power through it, said at least one contact element having a shorter length than the remaining contact elements.
  • the combination of these features of the connector of the present invention allows, firstly, to place a large number of contact elements with a limited diameter of the connector formed by the receiving part and the connecting part, which is usually from 10 to 15 mm, and secondly, to ensure ease of connection, reduction friction and eliminate or reduce the likelihood of unauthorized accidental closure of pairs of contact elements of the connecting part and the receiving part of the connector, for example during installation of the nozzle in the control unit.
  • the angle of inclination can be selected based on the required number of contact elements that need to be placed at a given diameter of the connecting part.
  • the preferred interval of the angle of inclination was established experimentally, on the one hand, eliminating or reducing the likelihood of unauthorized accidental closure of pairs of contact elements of the connector, reducing friction, and ease of connection, and on the other hand, provides a compact connection part of the connector (which, in turn, to ensure the compactness of the element, of which the connecting part of the connector, for example, nozzles), and, accordingly, the receiving part of the connector (which As such, it will ensure the compactness of the element, of which the receiving part of the connector, for example, the control unit), as well as the comfortable amount of effort exerted by a specialist when connecting the connector, installing the nozzle in the control unit and disconnecting them at the end of work.
  • the present invention also relates to a medical device for diagnostic, therapeutic or surgical operations, containing
  • control unit for a removable distal nozzle and a removable distal nozzle
  • the nozzle and the control unit are connected via a connector with the ability to transmit signals to / from the nozzle from / to the control unit, made in the form of connecting elements inserted one into the other, on the outer surface of one of which and on the inner surface of the other there are a number or rows of contact elements passing in the direction of the longitudinal axis of the connector at an angle to the specified axis.
  • the connector is made in the form of axisymmetric bodies having a common longitudinal axis of symmetry.
  • a connector comprises a plurality of contact elements located on the outer surface of one connecting element and on the inner surface of another connecting element in one or more rows extending obliquely to the longitudinal axis of the connector.
  • the radial distance between the contact surfaces of each of the rows of contact elements and the longitudinal axis of the connector decreases continuously as the contact elements approach the tip of the connector.
  • the radial distance between the contact surfaces of each of the rows of contact elements and the longitudinal axis of symmetry is constantly increasing as it approaches the tip of the connector.
  • the connector comprises contact elements for receiving and / or transmitting a plurality of signals, in particular for supplying power and / or transmitting information signals to / from the nozzle from / to the control unit of the medical diagnostic device through them.
  • the inclination angle of the indicated row or rows is selected from the following intervals: from 0.05 to 89.5 degrees, from 0.5 to 45 degrees, from 5 to 25 degrees, from 4 to 7 degrees, from 5 to 10 degrees, from 7 to 15 degrees, from 10 to 15 degrees, from 10 to 20 degrees, from 10 to 35 degrees, from 15 to 35 degrees, from 20 to 40 degrees, from 25 to 45 degrees.
  • the radial distance between the contact surfaces of each of the contact elements and the longitudinal axis of the connecting part of the connector is constantly decreasing, and the radial distance between the contact surfaces of each of the contact elements and the longitudinal axis of the receiving part of the connector is constantly increasing as the contact elements approach the tip of the connector .
  • the contact surfaces of the contact elements are located in a plane extending obliquely to the longitudinal axis of the connector.
  • a number of contact elements of the connector is made in the form of a straight line, a curved line, a zigzag line, a helical line, a spiral line.
  • two or more rows of contact elements are arranged on each of the connecting and receiving parts of the connector, offset from each other in the circumferential direction.
  • the connector further comprises electrical contact elements located on the end surface of the connecting part and mating contact elements located on the inner end surface of the receiving part.
  • the number of pairs of contact elements in the connector is from 2 to 40 or more, preferably from 4 to 12, from 10 to 20, from 16 to 24, from 20 to 40 pairs of contact elements.
  • the contacts of the receiving part are made in the form of spring-loaded contacts, and the contacts of the connecting part are in the form of flat plates, or vice versa.
  • the connecting part is in the form of a cylinder, cone, pyramid, truncated cone, truncated pyramid, or a combination thereof.
  • the connector also comprises guiding means defining the orientation of the connecting part relative to the receiving part and providing a substantially equal clearance between the contact elements of the connecting part and the corresponding reciprocal contact elements of the receiving part of the connector when inserting the connecting part into the receiving part of the connector.
  • Guide means can be made in the form of a protrusion.
  • the receiving part contains a groove corresponding in shape and size to the protrusion.
  • the guiding means may be in the form of a flat.
  • the connector portion of the connector also comprises a radio frequency identification tag to identify said connector portion when it is connected to the receiver portion.
  • the connecting part also comprises a locking element for releasably fixing the connecting part in the receiving part when the said fixing element interacts with the fixing means located in the specified receiving part, the locking element is configured to release the connecting part from the receiving part when actuating the extraction means located on the receiving part.
  • the present invention also relates to a method for diagnostic, therapeutic or surgical intervention using the claimed medical device, according to which:
  • connection / disconnection of the removable distal nozzle and the control unit is carried out by linearly moving the connecting part and the receiving part along the guides along the longitudinal axis of the connector to achieve the closure / opening of these mutually corresponding contact elements of the connector.
  • the connector after the connection of the connecting and receiving parts, is additionally fixed by means of fixation located in the specified receiving part and configured to release the connecting part from the receiving part by actuating the extraction means located on the receiving part.
  • the invention also relates to a method for making a detachable connection using the above-described connector, according to which the connecting part is inserted into the receiving part of the connector by linearly moving along the longitudinal axis of the connector until the mutually corresponding contact elements of the connector are closed / opened.
  • the connector after connecting the connecting and receiving parts, is additionally fixed by means of fixation located in the specified receiving part, configured to releasing the connecting part from the receiving part by actuating the extraction means located on the receiving part.
  • FIG. 1 is a perspective view of a medical diagnostic device consisting of a control unit made in the form of a handle with a removable distal attached;
  • FIG. 2 shows a perspective view of a control unit made in the form of a handle with a receiving part of a connector according to one embodiment of the invention
  • FIG. 3 shows a perspective view of a removable video endoscopic distal nozzle with a connecting part of a connector according to one embodiment of the invention
  • FIG. 4 shows a perspective view of a removable distal nozzle with an antenna and electronic components of an RF tag placed on it according to one embodiment of the invention
  • FIG. 5 shows a perspective view of the proximal contact group of the connecting part of the connector of the removable video endoscopic distal nozzle and the mechanism 5 for fixing the removable video endoscopic distal nozzle 2 in the handle 1;
  • FIG. 6 is a perspective view of a distal contact group of a receiving portion of a connector of a control unit according to one embodiment of the invention.
  • FIG. 7 shows contact groups of a video endoscopic distal nozzle connector and a control unit in a connected state according to one embodiment of the invention
  • FIG. 8 is a view of two adjacent contacts of a video endoscopic distal nozzle connector and a control unit at the time of their initial joint contact and in a closed state according to one embodiment of the invention
  • FIG. 9 shows a perspective view of a removable video endoscopic distal nozzle with a connector of a connecting part according to one embodiment of the invention
  • FIG. 10 shows contact groups of a video endoscopic distal nozzle connector and a control unit in a connected state according to one embodiment of the invention
  • FIG. 11 shows the proximal part of the optical system of the video endoscopic distal nozzle according to one embodiment of the invention
  • FIG. 12 shows the distal part of the optical system of the video endoscopic distal nozzle according to one embodiment of the invention.
  • a distal nozzle is meant a functional element of a medical diagnostic device, for example, a video endoscopic system, connected to the control unit of a medical diagnostic device and containing on its distal section a tubular part or body inserted into the studied area of the patient’s body for diagnostics, as well as a functional head located in the tubular body or on the proximal portion of the nozzle and containing optical and electronic components designed to form light or other effects used in the diagnosis of the studied area of the patient, as well as the reception and conversion of the signal reflected from the studied area and its transmission to the display device of the medical diagnostic device.
  • a medical diagnostic device for example, a video endoscopic system
  • the medical diagnostic device is a video endoscopic system, also called a video endoscope below, with removable video endoscopic distal nozzles shown in FIG. 1, which contains: manager a block made in the form of a handle 1, which is shown in more detail in FIG.
  • the handle 1 is made in the form of a hollow plastic housing containing a tubular part located in its upper part and including a receiving part located in the distal portion 38 of the handle 1 in the form of an opening 400 for attaching a removable nozzle 2, and a lower part, designed to grip and hold the handle with 1 hand during its use.
  • the handle 1 comprises electric control buttons 6, an electronic unit 8 and a contact block 4 of the control unit containing spring-loaded contact elements 12, which are reciprocal contact elements designed to interact with contact elements of a removable video endoscopic distal nozzle 2.
  • a button 7 for removing inserted into the handle 1 of a removable distal nozzle 2, described in more detail below.
  • the receiving part of the connector of the control unit covers the connecting part of the connector of the nozzle 2 when it is connected to the control unit
  • an alternative embodiment is possible in which the nozzle 2 has a receiving hole located on the connecting part of the nozzle and the control unit has a protruding receiving the part covered by the receiving hole of the connecting part of the nozzle 2.
  • the receiving part of the connector of the control unit covers the integral part of the connector of the nozzle 2 is preferred, since in this case more high protection of the receiving hole, in particular, the contact elements of the control unit from contamination, in particular, due to the possible penetration of physiological fluids into it.
  • the electronic unit 8 of the handle 1 shown in FIG. 2 is made in the form of an electronic board with electronic components and is connected to the video signal processing and display device 100 via cable 3, as well as to the distal contact group 4 of the handle 1 and control buttons 6.
  • the electronic unit 8 contains a microprocessor for processing video signals received from the functional head, in particular the video head 17, a removable video endoscopic distal nozzle 2 (see Fig. 3), and to generate control electrical signals that control the electronic components of the nozzle 2, in particular, by the video sensor of the video head 17, as well as other electronic components of the functional head, such as lighting LEDs, functional diagnostic modules etc. if available.
  • the electronic components of the electronic unit 8 implement the necessary input interfaces, for example, MIPI CSI, to receive data from the video sensor and other functional elements, process this data and transmit the processed signal through the output interfaces via the connecting cable 3 to the video signal display device 100.
  • the output interfaces of the electronic unit 8 should provide sufficient bandwidth and signal transmission to the required distance.
  • the output interfaces of the electronic unit 8 for example, HDMI, DisplayPort and / or Thunderbolt, USB 3 can be used.
  • electronic components can be located in the removable distal nozzle 2 for matching the video sensor interfaces and electronic unit 8. The need for additional electronic components is determined at the stage of engineering implementation of the invention.
  • the NFC controller is implemented in the electronic unit 8, and its antenna is located in the handle 1. Processing of these data by electronic unit 8 allows the use of software, such as a driver, for the correct operation of the video sensor in electronic unit 8.
  • the electronic unit 8 implements physical or logical interfaces for exchanging commands with the video display device 100. The choice of data transmission interfaces and commands is carried out during the engineering implementation of the invention.
  • the electric control buttons 6 are located on the handle body 1 in a place convenient for use by an operator or a doctor during a video endoscopic examination.
  • the electric control buttons 6 are electrically connected to the electronic unit 8.
  • the user when pressing the button 6, can, for example, save frames of the video image and / or stop / start recording the video image.
  • the video display device 100 shown in FIG. 1 comprises a display device, for example, a display with a TFT matrix, a device for matching formats of the output signal of the electronic unit 8 and the input signal of the display device, such as a matrix controller, for example, with an HDMI input and LVDS or eDP output.
  • the video display device 100 may include electronic components for storing frames of video images and / or all or part of the video signal and recording them on external media, such as flash memory, and / or transferring them to external, including remote, recording and storage devices.
  • the video signal display device 100 is not considered in detail in the invention, and its composition and capabilities are determined at the stage of engineering implementation of the invention.
  • the removable video endoscopic distal nozzle 2 shown in FIG. 3 is made in the form of a combination of essentially cylindrical bodies of revolution and / or cone-shaped bodies of various diameters, shapes and different degrees of rigidity, including a cylindrical tubular part 16 having a longitudinal axis of symmetry L0, a protective cap 15, the longitudinal axis of which coincides with the longitudinal axis L0 of the tubular part 16, and a substantially cylindrical or cone-shaped connecting part 50, made with the possibility of detachable connection with the handle 1 of the video endoscope, i.e.
  • the connector connecting part 50 can also be made essentially in the form of a truncated cone, tapering in the proximal direction of the nozzle 2 and having a longitudinal axis L1.
  • the connecting part 50 of the connector may also be in the form of a body, the covering surface of which is in the form of a cylinder, cone, pyramid, or a combination thereof, having mainly an axis or plane of symmetry.
  • the nozzle 2 is made in the form of essentially axisymmetric bodies, i.e. bodies having a spatial axis of symmetry, and the axes of these bodies coincide.
  • all external forces acting on the nozzle are directed mainly along its longitudinal axis, and external forces acting on the components of the nozzle during attachment and detachment of the nozzle 2 from the handle 1, as well as during its use during diagnostics, are summarized by substantially minimized by minimizing possible torques acting on the components of the nozzle.
  • the removable video endoscopic distal nozzle 2 has a distal end 40, which is adjacent to the distal portion 42 of the nozzle, intended for manipulation in the patient’s body, and the opposite proximal end 41, to which the proximal portion 43 of the nozzle adjoins, on which the nozzle is attached to the handle 1.
  • the video endoscopic distal nozzle 2 contains an uncontrolled insertion part made in the form of a tubular part 16, and a functional head containing a video head 17, p located inside the tubular part 16 at its distal end.
  • a protective cap 15 is adjacent to it to protect the handle 1 and to facilitate handling of the nozzle 2 when it is attached to the handle 1.
  • the length of the protective cap along the longitudinal axis of the nozzle can be from 20 to 40 mm in a practical embodiment.
  • the nozzle 2 contains a connecting part 50 adjacent to the protective cap 15 with the electrical parts located on it contact elements, through which the nozzle is attached to the receiving element of the handle 1.
  • the video head 17 comprises light sources, for example LEDs, and an optoelectronic module comprising a video sensor and a lens system for receiving, processing and transmitting signals reflected from the examined area, in particular video images, to electronic unit 8.
  • LEDs and the video sensor are electrically connected to contact elements located on the printed circuit board or boards located on the connecting part 50 of the connector on the proximal portion 43 of the video endoscopic the actual nozzle 2 and containing a row 13 or rows of electrical contact elements for exchanging signals with the electronic unit 8.
  • the video head 17 is not considered in more detail in the invention, and its composition and capabilities are determined at the stage of engineering implementation of the invention.
  • the protective cap 15 is also a protective case for electronic components located in the connecting part 50 of the connector located on the video endoscopic distal nozzle 2.
  • it is designed to prevent the control unit from entering physiological fluids during diagnosis, as well as providing the required ergonomic characteristics during manipulations with the video endoscopic distal nozzle 2, performed by a doctor, for example, removing it from the hands yatki 1 and connect to it.
  • the protective cap can be made in one piece with one of the components of the nozzle, for example by injection molding, but can also be made in the form of a separate element, mounted on the tubular part 16 during the assembly of the nozzle 2.
  • the latter contains a radio frequency identification tag and electronic components for radio frequency identification, for example, an NFC antenna 18 and necessary electronic components located on a printed circuit board 19 located under the protective cap 15.
  • the identification tag may contain information about the type of video sensor and its unique identification code. Reading the specified information by the electronic control unit of the control unit allows you to configure the control unit to use removable nozzles with various types of video sensor. The presence of a unique identifier for the video endoscopic distal nozzle 2 also allows you to keep track of the operational load on the specified nozzle.
  • the information contained in the identification tag can be used to control the shelf life of the nozzle in a sterile package and whether this video endoscopic distal nozzle 2 was previously used or not, which can prevent the reuse of an already used removable video endoscopic distal nozzle 2.
  • additional electronic components necessary for the proper functioning of the video sensor chip, for example, smd resistors or capacitors, may be located in the video endoscopic distal nozzle 2.
  • smd resistors or capacitors may be located in the video endoscopic distal nozzle 2.
  • the tubular part 16 of the nozzle 2 serves to introduce the video head 17 into the patient’s body and bring the area examined by the doctor, and the diameter of the tubular part 16 and its length is determined by the anatomical features and location of this area, as well as the type of diagnosis.
  • the length of the tubular part 16 is about 16-18 cm, and its diameter is about 4 mm, and for examining the organs of hearing, the length of the tubular part 16 is 3-5 cm with a diameter of about 2-3 mm.
  • the tubular part 16 can be made in the form of a monolithic or hollow cylindrical body of rigid materials, such as, for example, stainless steel, or elastic materials, such as, for example, silicone rubber.
  • the tubular portion 16 has a circular cross-section to minimize its invasive effects during diagnosis.
  • the cross section of the tubular portion 16 of the nozzle 2 may also have a shape other than round, for example an ellipse shape.
  • the diameter of the tubular part 16 is from 2 to 10 mm, most often about 4 mm, and the diameter of the connecting part is from 10 to 60 mm.
  • the connecting portion 50 of the video endoscopic distal nozzle connector 2 shown in FIG. 3-5, is located on the proximal portion 43 of the indicated video endoscopic distal nozzle 2.
  • the connector connecting portion 50 is made in the form of a substantially cylindrical body having a longitudinal axis of symmetry L1, and contains two linear rows 13, 14 located on its surface of electric contact elements.
  • the connecting portion 50 may have a cross-sectional shape other than round, such as oval, rectangular, trapezoidal, and other suitable shapes.
  • the contact elements of the connecting part of the connector are arranged in two rows 13 and 14 on printed circuit boards arranged substantially along the longitudinal axis L1 of the connecting part 50 at an angle of 5 degrees to the specified axis and are mirrored with respect to the specified axis, so that the contact elements in each row approach the longitudinal the axis of the connector in the proximal direction of the nozzle, i.e. each subsequent in the proximal direction of the nozzle contact element is offset from the previous contact element in the radial direction inward of the connecting part 50 of the connector.
  • the location of the contact elements in a row means that the line connecting the centers of the contact elements and, accordingly, their contact surfaces, forms a straight or curved line.
  • the connecting part 50 and the tubular part 16 of the distal nozzle 2 are aligned, so that their longitudinal axes L0 and L1 coincide.
  • the longitudinal axis L0 of the tubular part 16 and the longitudinal axis L1 of its connecting part 50 may not coincide, in particular, they can be parallel or at an angle to each other.
  • the contact elements of the connector portion 50 may be arranged along a curved line, for example, along a helical line.
  • the connector connecting portion 50 may have more than two rows of electrical contact elements disposed offset from each other in the circumferential direction of the connecting part 50 with substantially the same angle of inclination of said rows of contact elements to the longitudinal axis of the connector.
  • the row or rows of contact elements may be located on a single printed circuit board in a straight line and / or a curve, in particular a helix.
  • the contact elements may be further located on the end surface of the proximal end 41 of the video endoscopic distal nozzle 2.
  • Contact elements that are responsive to the contact elements of the connecting part 50 of the connector of the video endoscopic distal nozzle 2 are located in the receiving part of the connector of the tubular part of the handle 1 and will be described in detail below.
  • printed circuit boards of rows 13, 14 of the contact elements of the nozzle and response contact elements of the control unit will have the opposite location. That is, the printed circuit boards on the connecting part 50 of the connector of the nozzle 2, on which two rows 13, 14 of contact elements are located, will be inclined to the longitudinal axis L1 of the connecting part 50 of the connector of the distal nozzle 2 with the removal of the contact elements from the specified axis in the direction of the proximal end nozzles 2, i.e. their radial displacement, i.e.
  • the distance in the radial direction between the contact surfaces of the contact elements of the video endoscopic distal nozzle 2 located in rows 13, 14 of the contact elements and the longitudinal axis L1 of the connecting part 50 of the connector of the video endoscopic distal nozzle 2 will increase as they approach along the longitudinal axis L1 to the proximal end 41 of the specified nozzles 2, i.e. each subsequent contact element will be offset relative to the previous contact element in a radial direction inward in the distal direction of the nozzle.
  • the contact elements of the connector can be made by any known method, for example, in the form of contact pads etched on rigid or semi-rigid printed circuit boards, for example, round or rectangular in shape and subsequently coated with wear-resistant material.
  • Contact elements of the receiving part of the connector located in the control unit which are reciprocal contact elements for contact elements of the connecting part 50 of the connector located on the nozzle 2
  • are spring-loaded contacts or pogo pin the contact surface of which is a hemisphere or round surface with rounded corners with a diameter of about 1 mm ⁇ 0.5 mm, their length in the free (not pressed) state is from 3 to 5 mm, and the maximum stroke of the rod between the not pressed and fully pressed state is from 0.1 to 0.6 mm.
  • the diameter of the spring-loaded contacts is from 0.8 to 1.2 mm.
  • the spring-loaded contacts may have a different design of elastic contacts. The use of spring-loaded contacts also ensures the density of the connection of the nozzle 2 and the handle 1 due to the elastic effect of a plurality of spring-loaded contacts, providing a clamping of the nozzle 2 in the receiving element of the handle 1.
  • the width of the platform of the contact elements of the connector along the longitudinal axis L1 of the connecting part 50 of the connector corresponds to the projection size of the spring-loaded mating contact element (pogopine) of the handle 1.
  • the pogopin has a diameter of 1.5 mm
  • the width of the platform in the longitudinal direction of the nozzle has a size of not more than 1, 5 mm
  • its length, measured in the direction transverse to the longitudinal axis is determined by the allowable dimensions of the connecting part of the connector of the nozzle 2 and can be from 1, 5 to 5 mm.
  • the step size between the contact elements is determined by the diameter of the pogopin and the minimum required distance between them and can be from 0.1 to 2 mm.
  • the step of the contact elements i.e. the distance between the centers of adjacent contact elements of the nozzle 2 and the handle 1 will be 1, 6 mm.
  • Contact elements of the connecting part 50 of the connector are placed on printed circuit boards, and are also electrically connected to the outputs of the video sensor and LEDs located in the video head 17 of the removable distal video endoscopic nozzle 2.
  • the implementation of the printed circuit boards on which rows 13 and 14 of the contact elements of the connector are located located at an angle to the longitudinal axis L1 of the connecting part 50 of the connector with their approach to the specified axis in the direction of the proximal end of the nozzle and have an angle of inclination formed between the line her going through the centers contact surfaces of the contact elements, and the longitudinal axis of the connecting part of the connector, which in the general case is more than 0 and less than 90 degrees.
  • the radial distance between the contact surfaces of the contact elements of the connector located in two rows 13 and 14 of contact elements and the longitudinal axis of the connector decreases continuously as the contact elements approach the proximal end of the connector, i.e. each subsequent in the proximal direction of the nozzle 2, the contact element is offset relative to the previous contact element in the radial direction inward.
  • the resulting angle of inclination of the rows 13 and 14 of the contact elements to the longitudinal axis L1 of the connecting part 50 of the connector is greater than 0 and less than 90 degrees.
  • monotonous or constant change in particular a constant decrease or constant increase
  • the angle of the rows of 13, 14 contact elements to the longitudinal axis L1 of the connecting part 50 of the connector is from more than 0 to about 45 degrees, in one embodiment, the implementation is from more than 0 to about 30 degrees, more in one embodiment, a value from more than 0 to about 20 degrees, and most in one embodiment, a value from more than 0 to 10 degrees.
  • the angle of inclination of the rows 13, 14 of contact elements in a practical embodiment may be from 0.5 to 5 degrees. According to other implementation examples, the angle of inclination can be selected from the following intervals: from 5 to 15 degrees, from 10 to 15, from 10 to 20 degrees, from 5 to 25, from 10 to 35, from 15 to 35, from 20 to 40 , 25 to 45 degrees.
  • each of the contact elements located in rows 13, 14 is offset relative to the adjacent contact element in the longitudinal, in particular proximal, direction of the connector, while the radial distance between one of the two adjacent contact elements located in the longitudinal direction closer to the end 41 of the connector, and the longitudinal axis L0, L1 of the connector is less than the radial distance between the other of the two adjacent contact elements and the longitudinal axis of the connector.
  • the radial distance between the contact elements and the longitudinal axis of the connector is constantly decreasing towards the end of the connector 41, i.e. when these contact elements approach each of the rows 13, 14 of contact elements to the end 41 of the connector, so that each subsequent contact element in the proximal direction of the connector is offset relative to the previous contact element in the radial direction inside the connecting part of the connector.
  • the contact elements in the rows 13, 14 of the connecting part 50 of the connector are arranged so that the longitudinal axes of the rows 13, 14 of contact elements coincide with the generators of the straight circular cone, the axis of which coincides with the longitudinal axis L1 of the connecting part 50, and its vertex is located proximally relative to the specified number of contact elements.
  • the solid angles at the vertices of the cones constructed for each of the rows 13, 14 of the contact elements do not have to be equal, and the vertices do not have to match.
  • the radial distance between their contact surfaces is constant, and in this case evenly, decreases in the longitudinal direction of the nozzle 2. That is, when these contact elements approach the proximal the end 41 of the nozzle 2, the radial distance between the line passing through the centers of their contact surfaces perpendicular to the longitudinal axis L1 of the connecting part 50 to the specified axis decreases evenly.
  • the contact elements located farthest from the longitudinal axis L1 of the connecting part 50 are arranged in rows 13, 14 of contact elements in FIG.
  • the contact elements closest to it, located in rows 13, 14 of FIG. 5 to the right are placed at a distance of about 1-2 mm from the indicated axis.
  • the angle of inclination of the rows 13, 14 of the contact elements to the longitudinal axis L1 of the connecting part 50 in this embodiment is from 5 to 15 degrees. At small angles of inclination of the printed circuit boards of the contact elements, it is possible to arrange in a row a sufficiently large number of contact elements without significantly increasing the dimensions of the nozzle 2, i.e. ensuring its compactness even in the case of placement on the nozzle 2 and the handle 1 of a significant number of contact elements.
  • a compact embodiment of the connecting part 50 of the nozzle 2 is provided, the diameter of which in this case is essentially twice the radial distance of the farthest contact element from the longitudinal axis L1 of the nozzle 2, which in this embodiment is 8-12 mm, the length of the connecting part is 15-30 mm, which also provides a compact size of the receiving part of the connector of the handle 1, covering the connecting part 50 of the connector of the nozzle 2, in in particular, it allows to reduce the diameter of the distal part of the handle 1, ensuring its high ergonomics, which is important, for example, for endoscopic endoscopes, as well as the ease and convenience of controlling the nozzle 2 in the process of diagnosis with one hand of the doctor holding the handle 1.
  • the specified diameter and length the connecting part 50 of the connector allows for the manufacture of removable distal nozzles that have the required minimum diameter of the tubular part of the nozzle inserted into the patient’s body, as well as compact dimensions part, light weight, low cost, simple and convenient to use, provide ease of attachment and detachment of the nozzle 2 from the handle 1, and also provide reliable transmission of the required number of electrical and information signals between the nozzle 2 and the handle 1 of the diagnostic medical device.
  • the distal nozzle according to the invention can be made removable and disposable, which eliminates the need for sterilization before each use and increases the hygiene of diagnosis.
  • the attachment of the nozzle 2 and its detachment from the handle 1 is as intuitive as possible, simple and reliable along the longitudinal axis of the tubular part 16 of the nozzle 2 and can carried out, including, with one hand of a doctor holding the handle 1 of a medical diagnostic device without the risk of damage to the nozzle due to the occurrence of external torques.
  • the handle 1 also contains fixing means (see Fig. 5), which are a mechanism 5 for fixing the connecting part of the connector (nozzle 2) in the receiving part of the connector (handle 1), and a mechanical button 7 for removing the removable video endoscopic distal nozzles 2 (see Fig. 2).
  • the connector locking mechanism 5 comprises a spring-loaded latch comprising a latch protrusion 404 and a latch spring 405.
  • the fixing means of the handle 1 are adapted to interact with the fixing means of the nozzle 2, which is a recess 403 located at the proximal end of the connecting part 50 of the connector.
  • the spring-loaded latch When connecting the removable video endoscopic distal nozzle 2 to the handle 1, the spring-loaded latch is aligned with the recess 403. Then, under the action of the spring 405 of the latch, the latch protrusion 404 enters the recess 403 at the proximal end of the connecting part 50 of the removable video endoscopic distal nozzle 2 and, thus, fixes the removable video endoscopic distal the nozzle 2 in the position inserted into the handle 1, preventing its axial movement and ensuring reliable contact of the pairs of electrical contact elements us adki 2 and handles 1 when the doctor conducts video endoscopic examinations.
  • a spring-loaded mechanical push button 7 used as a nozzle extraction means 2 is located at the proximal end 39 of the handle 1 and is connected to a rod 406, the other end of which is connected to the spring-loaded latch of the locking mechanism 5 .
  • the mechanical button 7 of the video endoscopic distal nozzle 2 is located in a place convenient for pressing it with one of the fingers, holding the specified video endoscopic distal nozzle 2.
  • extraction means can be made in the form of a pivot arm, a sliding element, and the like.
  • the latch and the recess of the fixation means of the video endoscopic distal nozzle 2 and the handle 1 can be interchanged.
  • the receiving part of the connector located in the handle 1 may have a pressure spring loaded when the video endoscopic distal nozzle 2 is inserted into the handle 1 and contributing to the ejection of the video endoscopic distal nozzle 2 when it is released from the handle 1 using the extraction means.
  • a pressure spring loaded when the video endoscopic distal nozzle 2 is inserted into the handle 1 and contributing to the ejection of the video endoscopic distal nozzle 2 when it is released from the handle 1 using the extraction means.
  • the dimensions of the connector connecting part 50 located on the removable video endoscopic distal nozzle 2 are made such that it is possible to insert the connecting part 50 into the opening 400 of the handle 1 with a minimum clearance between the outer surface of the connecting part 50 and the inner surface of the receiving part of the connector (holes 400 ) of the handle 1.
  • directional insertion of the connector connecting portion 50 into the receiving portion of the connector is ensured, providing substantially equal clearance between each of the contact elements of the connecting part 50 of the connector, in particular, the video endoscopic distal nozzle 2 and the corresponding reciprocal contact element of the receiving part of the connector, in particular the handle 1, when inserting a removable video endoscopic distal nozzle 2 into the handle 1.
  • the contact group 4 of the handle 1 shown in FIG. 6, is located in the opening 400 of the receiving part, located at the distal end of the tubular part of the handle 1.
  • the opening of the receiving part of the handle 1 in the embodiment of the invention is made in the form of a cylindrical hole or a hole having the shape of a truncated cone, essentially complementary in shape to the geometric shape of the connecting part 50 of the connector nozzle 2 and having a longitudinal axis L2.
  • the contact group 4 contains two rows of 9 and 10 spring-loaded contact elements symmetrically located along the longitudinal axis L2 of the tubular part of the handle 1 and configured to connect with two rows of 13 contact elements of the connecting part 50 of the connector when inserted into handle 1.
  • the contact elements of the nozzle 2 are located on two printed circuit boards located in opposite directions and containing rows of 13, 14 contacts, each consisting of twelve contact elements, respectively, arranged in a row in a straight line passing obliquely relative to the longitudinal direction of the distal nozzles 2.
  • the specified arrangement of the rows 13, 14 of the contact elements can also be characterized as an offset of one row relative to another row by 180 Rohs in the circumferential direction of the connection of the connector.
  • the number of reciprocal contact elements of each of the rows 9, 10 of the handle 1 coincides with the number of contact elements of the corresponding rows 13, 14 of the nozzle 2.
  • the nozzle 2 and the receiving part of the handle 1 contain 24 contact elements.
  • Each of the rows 9 and 10 of the spring-loaded contact elements contains a printed circuit board 1 1 and twelve spring-loaded contact elements 12 located on it, located on the printed circuit board 11 and having an electrical connection with it.
  • the printed circuit boards 11 are inclined to the longitudinal axis L2 of the receiving part of the connector of the tubular part of the handle 1 with the distance from the specified axis in the direction of the distal end of the tubular part, so that the radial distance between the contact surfaces of the spring-loaded contact elements 12 and the longitudinal axis L2 of the tubular part of the handle 1 increases in the distal direction of the handle 1.
  • each subsequent of the contact contact elements located in rows 9, 10 is offset relative to the reciprocal contact element of the receiving part of the handle connector 1 adjacent to it in the longitudinal direction both in the longitudinal direction of the handle 1 and in the radial direction inward, so that the radial distance between one of two adjacent reciprocal contact elements located in the longitudinal direction closer to the distal end 38 of the handle 1, and the longitudinal axis L2 of the receiving part of the connector of the tubular part of the handle 1 is large e of the radial distance between the other of the two adjacent mating contact elements and the longitudinal axis L2 of the receiving part.
  • the radial distance between the mating contact elements and the longitudinal axis of the receiving part is constantly increasing in the distal direction of the handle 1, i.e. when approaching the mating contact elements to the distal end 38 of the handle 1.
  • Each printed circuit board 11 of the handle 1 is electrically connected by means of a flexible ribbon cable (not shown) with the electronic unit 8 (see Fig. 2) of the handle 1.
  • the total number of contact contact elements 12 is determined during the engineering implementation of the invention and mainly depends on the type of output interface , resolution and / or maximum bit depth of the data bus of the video sensors used in the video endoscopic distal nozzles 2, as well as additional electrical elements located on the functional head, such as LEDs, etc.
  • the most advanced models of modern video endoscopic distal nozzles output a video signal with a resolution of 13 megapixels, and budget versions with a resolution of 0.3 megapixels, while the miniature versions of the OV6211 sensors have a resolution of 400x400 pixels.
  • the total number of contact elements 12 in contact group 4 is 16 (14 for the video sensor and 2 for powering the iodine LEDs), and when using the Ov5670 video sensor, 44 (42 contacts for the video sensor and 2 pins for powering the LEDs).
  • the minimum number of contact elements of the video endoscopic distal nozzle 2 and the handle 1, i.e. their total minimum number of contact pairs is equal to two, by which it is possible to supply power, for example, to a light source in when using a removable distal nozzle 2 for diaphanoscopy.
  • the maximum number of contact pairs that can be implemented on the connecting part of the connector of the present invention is virtually unlimited. In practice, as noted above, the total number of contact pairs is determined by the resolution of the sensor, the type of its interface and the presence of additional functional elements. Obviously, in practical implementation, the sensor with the maximum number of contacts is taken into account, which, together with the required number of additional contacts on the lighting elements and additional elements, determines the required number of contact pairs of the nozzle 2 and the handle 1.
  • the contact group 4 may contain one or more rows of contact elements 12 arranged in a row at an angle to the longitudinal axis L2 of the tubular part of the handle 1, comprising a value greater than 0 and less than 90 degrees.
  • double rows of contact elements i.e. contact elements located on one printed circuit board in two predominantly parallel rows.
  • 40 contact elements on the video endoscopic distal nozzle 2 and handle 1 can be placed on two printed circuit boards in single rows of 20 contacts each, or in double rows on each of two printed circuit boards with 10 contacts in each row .
  • the number of printed circuit boards of the video endoscopic distal nozzle 2 corresponds to the number of printed circuit boards of the handle 1
  • the inclination of the printed circuit boards of the video endoscopic distal nozzle 2 corresponds to the inclination of the printed circuit boards of the handle 1.
  • the contact elements 12 of the contact group 4 of the handle 1 are arranged along a line corresponding to the shape of the line of contact elements of the printed circuit boards of the video endoscopic distal nozzle 2.
  • the radial distance between the contact surfaces of the contact elements of the handle 1 and the longitudinal axis of the tubular part of the handle 1 increases or decreases in the distal direction of the tubular part of the handle 1 in accordance with the fact, decreases or increases the distance between the contact surfaces of the cont elements of the video endoscopic distal nozzle 2 and the longitudinal axis of the nozzle in the proximal direction of the nozzle 2.
  • each subsequent contact element of the handle 1 in the distal direction of the receiving part is shifted outward or inward from the previous contact element radially, depending on whether it is inward or outward in the radial direction, each subsequent contact element in the proximal direction of the nozzle is offset relative to the previous contact element of the nozzle 2.
  • the response contact elements 12 of the control unit shown in FIG. 6 are arranged in such a way that the axis of the rows 1 1 of the response contact elements 12 in this embodiment also coincide with the generators of the straight circular cone, the axis of which coincides with the longitudinal axis of the receiving part of the connector of the control unit, and its vertex is located proximally relative to the number of response contact elements 12.
  • the solid angles at the vertices of the cones constructed for each of the rows 13, 14 of contact elements and response contact elements 12 should be equal to ensure optimal electrical It measures between all corresponding contact packing elements 2 and the control unit.
  • the contact elements of the nozzle 2 are arranged along a helical line, it can also pass along the surface of a circular cone, i.e. with a constant approach of each of the rows of contact elements to the axis of the nozzle 2 in the longitudinal direction of the nozzle 2.
  • the response contact elements 12 of the control unit also pass along a helix, which is complementary to the helix of the rows 13, 14 of the contact elements of the nozzle 2.
  • control signals can be transmitted from the control unit to control the electronic components of the specified nozzle 2, in particular, the electronic components of the functional head, as well as information signals, for example, video signals received and generated by the video head 17 of the nozzle 2 between the nozzle 2 and the control unit, for example, for their subsequent transmission to the video display device 100 for visual display, the result in diagnostics.
  • the placement of contact elements on the surface of the circular cone allows for the attachment of the nozzle 2 to the control unit of the medical diagnostic device, as well as disconnection from it by a simple linear movement (insert) of the nozzle 2 in the receiving part of the control unit due to the absence of undercuts, as well as to prevent stray circuit contact elements during insertion of nozzle 2, since in this case, when inserting nozzle 2 into the control unit, the corresponding contact elements of nozzle 2 and from the contact elements of the control unit move towards each other linearly in parallel lines along the longitudinal axes of the nozzle 2, as well as along the axis of the receiving part of the connector of the control unit, as shown below in FIG. 8.
  • each of the contact elements of the nozzle 2 is closed only with the response contact element 12 of the control unit intended for it, and the possibility of their inadvertent contact with other response contact elements during insertion of the nozzle 2 into the control unit is excluded.
  • the linearity of the movement of the nozzle 2 when it is attached to the control unit with the simultaneous closure of all available pairs of contact elements necessary for transmitting control actions from the control unit to nozzle 2 for controlling the electronic components of nozzle 2, allows it to be inserted into the control unit with a simple and linear movement of the operator, including with one hand, which allows the second hand of the operator to be released for other manipulations.
  • the contact element of the nozzle 2 used to supply power to the nozzle 2 is made shorter than the rest of the contact elements, as will be described in more detail below, the possibility of “hot-swapping” of the nozzle, i.e. replacing one diagnostic distal nozzle with another without disconnecting the power supply from the control unit of the diagnostic tool.
  • the technical result is achieved by placing the top of the circular cone on either side of the rows 13, 14 of contact elements, since the principle is the inclination of the rows 13, 14 of the contact elements of the nozzle 2 relative to the longitudinal axis of the nozzle 2, i.e. the displacement of each subsequent in the longitudinal direction of the nozzle 2 of the contact element relative to the previous contact element in the radial direction inward.
  • FIG. 7 shows a video endoscopic distal nozzle 2 and a handle 1 in a connected state by means of a connector according to one embodiment of the invention.
  • Each of the contact elements of the two rows 9 and 10 of the distal receiving part of the handle 1 connector is connected to the corresponding contact element of the rows 13, 14 of the contact elements of the printed circuit boards of the connecting part 50 of the removable video endoscopic distal nozzle 2.
  • the inclined position of the contact elements allows, firstly, to increase the number of contact elements with a smaller outer diameter of the video endoscopic distal nozzle 2 compared with the location of the contact group perpendicular to the longitudinal axis L1 of the connecting part tee connector 50, and secondly, avoids unwanted breakage of electrical connections and the spring loaded contact elements when connecting video endoscopic distal head 2 to the handle 1, comprising a parallel arrangement of rows 9 and 10 of the contact elements.
  • the video endoscopic distal nozzle 2 comprises guiding means comprising a protrusion 402 extending along the longitudinal axis L1 of the connecting part 50 and configured to guide the video endoscopic distal nozzle 2 when connected to a handle 1, in which response guiding means provided in the form of a response groove 401 interacting with the specified protrusion 402 of the video endoscopic distal nozzle 2 so that the protrusion 402 of the connecting part of the connector the nozzle enters the reciprocal groove 401 of the handle when it is inserted into the handle 1.
  • the rows of contact elements of the video endoscopic distal nozzle 2 and the handle 1 are clearly oriented opposite each other, and maintaining a substantially equal gap between the corresponding contact elements of the removable video endoscopic distal nozzle 2 and the contact elements of the handle 1 when connecting the video a telescopic distal nozzle 2 to the handle 1 to ensure uniform contact and closure of the contact elements of the video endoscopic distal nozzle 2 and the handle 1 when the connecting part 50 of the removable video endoscopic distal nozzle 2 is inserted into the hole 400 of the handle 1.
  • the protrusion 401 of the video endoscopic distal nozzle 2 is located between the rows 13 and 14 of the contact elements of the video endoscopic distal nozzle 2 and extends along the entire length of the connecting part of the connector in deoendoskopicheskoy distal nozzle 2, and the opening 400 of the handle 1 comprises a groove 402 positioned on the inner surface of the bore 400 and extending the length of the connecting portion nozzle connector 2.
  • the guiding means of the video endoscopic distal nozzle 2 and the response guiding means of the handle 1 in one embodiment of the invention can also be provided by performing at least part of the cross-section of the connecting part 50 of the video endoscopic distal nozzle 2 complementary to at least part of the cross-section of the opening 400 of the receiving part of the handle 1 connector for example, in the form of a polygon or section of any other shape other than a circle that will uniquely determine the correct orientation nozzles 2 when inserted into the handle 1.
  • these guide means can be implemented in the form of a flat 503 made on the circumferential surface of the connecting part 50 of the nozzle 2 connector, as shown in FIG. 9, and a complementary in shape of the receiving part of the handle 1, providing the only possible angular orientation of the nozzle connector relative to the receiving part 400 of the connector when inserting the nozzle 2 into the handle 1.
  • the geometric dimensions, in particular, the length and angular position of the printed circuit boards, as well as the longitudinal displacement of the video endoscopic distal nozzle 2 until it is fixed by the latch of the handle 1, are selected according to the results of the experiments so that the spring of each reciprocal contact element 12 of the receiving part of the connector of the handle 1 is compressed when connecting and fixing the video endoscopic distal nozzle 2 in the handle 1 to an extent sufficient for reliable electrical connection, compensation for possible backlashes and exclusion of bounce of contact elements.
  • the indicated amount of preload i.e.
  • the amount of movement of the movable part of the spring-loaded response contact elements 12 along the axis k0, k1 between their resting state to the state of spring-loaded contact with the contact elements of the nozzle 2 with the video endoscopic distal nozzle 2 fully inserted is in the practical embodiment a value of about 0 , 1 - 0.2 mm.
  • the amount of preload of each of the response contact elements directly affects the amount of force required to install the nozzle in the handle, which in turn also depends on the angle of the contact elements relative to the axis of the connecting part of the connector. With an increase in the angle of inclination, the magnitude of the effort for installing the nozzle in the handle increases for a given amount of compression of the reciprocal contact elements.
  • the size of the contact surfaces and the order of switching of the power and signal lines are selected so as to ensure the connection of the power lines, i.e. power supply lines to the video endoscopic distal nozzle, last but not least, i.e. after connecting all the signal lines, which provides the ability to "hot swap" one nozzle for another without turning off the power to the control unit of the diagnostic tool.
  • the contact surfaces of the contact elements of the power lines on the printed circuit boards of the video endoscopic distal nozzle 2 are performed shortened in comparison with the contact surfaces of the remaining contact elements, in particular, the contact elements of the signal lines.
  • the power contact elements 451' of the video endoscopic distal nozzle 2 will come into contact with the power contact elements 451 'of the handle 1 only after all the information contact elements 450' come into contact video endoscopic distal nozzle 2 with all the response information contact elements 450 of the handle 1. That is no power will be supplied to the nozzle 2 until the Vu point of the proximal mating contact elements 12 of the handle 1 touches the proximal contact elements 451 'of the nozzle 2, while at the indicated moment of touching the point ⁇ of the other mating contact elements 12 of the handle 1 will already be in reliable contact with the remaining contact elements 450 'nozzles 2.
  • connection at the time ⁇ is unreliable due to possible tolerances in the manufacture of the video endoscopic distal nozzle 2 and the handle 1.
  • the spring-loaded contact elements With further axial movement of the connecting part of the connector and the receiving part of the connector, the spring-loaded contact elements are pressed by the value of VuAgo, while the connection point of the contact elements moves along contact surface along the segment B20A20.
  • time T 2 which characterizes the operating state of the connection of the video endoscopic distal nozzle 2 and the handle 1, in which the nozzle 2 is fixed in the handle 1 by the locking mechanism 5, the amount of preload of the spring-loaded contact elements 12 is greater than the possible irregularities, which ensures a reliable electrical connection.
  • the shortened contact surface of the power spring-loaded contact elements 451 ′ and 451 provides a power supply with some delay after connecting all the information contact elements 450 ′ and 450, which allows you to remove the video endoscopic distal nozzle 2 and attach it to the handle 1 without disconnecting the power supply to the control unit medical diagnostic device.
  • the minimum inclination angle a can be calculated between the line passing through the centers of the contact surfaces of the contact elements and the longitudinal axis L1 of the connecting part 50 of the video endoscopic distal nozzle 2, in which undesirable contacts of contact elements not intended for contact with each other when inserting the nozzle 2 into the control unit.
  • Reducing the size of the contact surfaces of the contact elements of the nozzle 2 and the diameter of the contact elements of the control unit, as well as increasing the accuracy of the manufacture of the contact elements of the nozzle 2 and the control unit will help to reduce the specified minimum angle and the inclination of the contact elements to the longitudinal axis of the nozzle 2, further reduce the size and increase the compactness of the nozzle 2.
  • the removable video endoscopic distal nozzle 2 shown in FIG. 9 comprises an uncontrolled insertion part designed for manipulation in the patient’s body, made in the form of a tubular part 501 located on the distal portion 42 of the nozzle 2 and containing a protective window 500 at its distal end, a protective cap 45 and a connecting part 50 containing a connecting housing 502 parts, two printed circuit boards 504 and 514 (not shown), with contact elements 450 ', located on the proximal portion of the housing 502.
  • the housing of the connecting part is made in the form of a substantially axisymmetric body having the longitudinal axis L1, as well as the horizontal plane of symmetry. As shown in more detail in FIG.
  • the contact elements 450 'of the detachable video endoscopic distal nozzle 2 are located on two printed circuit boards 504, 514 located opposite to each other symmetrically with respect to the longitudinal axis L1 of the connecting part 50 and at an angle to the indicated axis L1 so that the plane of the printed circuit boards 504 , 514 intersect the longitudinal axis L1 of the connecting part 50 of the nozzle 2 connector at one point located on the proximal extension of the axis L1 (to the right of the connecting part 50 of the connector 2 of the nozzle 2 shown in Fig. 9).
  • Each of these printed circuit boards 504, 514 contains two parallel rows of contact elements 450 ', and each of the rows consists of ten contact elements arranged in a straight line and passes obliquely relative to the longitudinal axis L1 of the connecting part 50 of the video endoscopic distal nozzle 2, corresponding the inclination of the printed circuit boards 504, 514 relative to the longitudinal axis L1 of the connecting part 50.
  • the radial distance between the contact elements 450 'and the longitudinal axis L1 of the connecting part 50 of the nozzle connector 2 p continuously decreases in the longitudinal direction of the nozzle 2, i.e. each subsequent in the proximal direction of the nozzle 2, the contact element is offset relative to the previous contact element in the radial direction inward.
  • the longitudinal direction of the nozzle 2 in this case coincides with the longitudinal axis L1 of the connecting part 50.
  • the total number of contact elements located on the connecting part 50 of the removable video endoscopic distal nozzle 2 in this embodiment is 40.
  • the contact elements of the connecting part 50 of the connector of the removable video endoscopic distal nozzle 2 are configured to contact the receiving contact elements 510, 515 of the receiving part of the connector of the control unit or the handles 1 located therein on the printed circuit boards 509, 516.
  • the surfaces of the extreme contact elements 451 'on the printed circuit boards 509, 516 of the video end scopic distal nozzle 2 used for supplying therethrough the power supply lines are made shorter compared to the other contact surfaces of the contact elements that are used to transmit signals.
  • the housing 502 of the connecting part 50 of the connector at its distal portion is made in the form of a circular cylinder with a longitudinal axis L1 of the connecting part 50, on the circumferential surface of which the flat 503 is made, and the cross section of the receiving part of the connector of the handle 1 is made complementary in shape to the cross section the distal end of the connecting part 50 at the location of the flat 503, which is designed to provide a unique angular orientation of the removable video endoscopic distal nozzle 2 when it is in the rate of the handle 1.
  • a cavity 505 passing from the end surface of the proximal end of the housing 502 into the housing 502 along its longitudinal axis L1 or parallel to it and designed to accommodate the protrusion 512 of the spring-loaded latch of the handle 1, designed to fix the distal nozzle 2 when it is attached to the handle 1.
  • a cylindrical locking element 511 designed to engage the protrusion 512 of the spring-loaded latch of the handle 1.
  • the element 511 is offset perpendicular to the longitudinal axis of the cavity 505 so that the protrusion 512 of the latch in a state rotated relative to the working position, it is made with the possibility of unhindered movement along the longitudinal axis of the cavity 505, thereby providing the possibility of extracting removable video endoscopic distal nozzle 2 from the handle 1.
  • Removing the nozzle 2 from the handle 1 is carried out by actuating the extraction means (not shown) located on the handle 1, in order to transmit in a known manner a mechanical action on the protrusion 512 of the latch for its deviation from the working (fixing ) the position and release, therefore, of the nozzle 2 for its removal from the handle 1.
  • the shape and dimensions of the protrusion 512 of the latch of the handle 1 and the fixing element 511 of the nozzle 2 are selected so that in the state of fixation of the connecting part 50 of the connector of the nozzle 2 in the receiving hole of the handle 1 is provided reliable contact between the contact elements 450 of the connecting part of the nozzle 2 connector and the reciprocal contact elements 510, 515 of the receiving part of the handle 1 connector, ensuring the necessary amount of preload B11-A21 of the rods of the spring-loaded contact elements 12, as shown in FIG. 8.
  • the housing 502 of the connecting portion 50 comprises a functional head comprising an optical electronic module 506, which is electrically connected through a flexible ribbon cable 507 to a printed circuit board 508 containing electronic components necessary for the optical electronic module 506 to function correctly, and through flexible ribbon cables 513 connected to printed circuit boards 504 and 514.
  • the functional head also contains radiation sources 520 located in the immediate vicinity of the optoelectronic module 506 and intended for optical radiation used to illuminate the studied area.
  • the opto-electronic module 506 of the functional head is intended for receiving optical radiation or a signal reflected from the object under study, converting it and generating a high-resolution video signal on its basis, as well as transmitting the specified high-resolution video signal to the video signal display device 100 of the medical diagnostic device.
  • the first channel of the optical system of the distal nozzle 2 is a lighting channel, which is a fiber 521 and designed to transmit light of a certain part or parts of the visible spectrum, and for some types of endoscopic examinations, also to transmit infrared and / or ultraviolet radiation from radiation sources 520 located in the housing 502 of the connecting part 50 of the connector of the nozzle 2, to the protective window 500 located at the distal end of the tubular part 501 of the nozzle 2, for illumination through it is studied area.
  • the protective window can be a flat element that does not refract light radiation, and there it can also be an optical lens.
  • the spectral composition of the radiation transmitted through the first channel depends on the specifics of the endoscopic examination.
  • a printed circuit board 519 with radiation sources 520 located on it, in particular light, which is electrically connected to a printed circuit board 508 on which electronic components, such as LED drivers, are necessary for the operation of radiation sources 520.
  • LEDs are used.
  • the light is transmitted from the radiation sources 520 to the distal end of the tubular part 501 through the optical fiber 521, which, in one embodiment, uses an optical fiber or a light guide.
  • a matching optical element (connector) 518 is used, for example, focusing gradients are used.
  • optical fibers 521, radiation sources 520 and connectors 518, as well as their physical parameters, is determined at the stage of engineering implementation of the invention and depends on the specifics of endoscopic examination, for which a removable video endoscopic distal nozzle 2 is intended.
  • the second channel of the optical system of the distal nozzle 2 is an optical information channel 517 and is designed to transmit light reflected by the examined object through a protective window 500 located at the distal end of the tubular part 501, from the protective window 500 to the light radiation receiver and the optoelectronic module 506, housed in the housing 502.
  • the technical implementation of the optical information channel is known and determined mainly by the diameter and length of the tubular part 501 and can be implemented, for example, with and use of the lens (wrapping) systems, rod lens of gradient, also called gradans, GRIN lenses, solid core light guide, the light guide bundle to a regular stacking of the fibers or a combination of the above components or other method known at the time of the invention.
  • lens elements At the distal end (lens) of the information channel 517 and the lighting channel, consisting of optical fibers 521, in one embodiment, lens elements, gradient optical elements and / or prisms are placed that convert the light reflected from the studied region to provide the necessary viewing angles and directions.
  • the protective window 500 itself can perform the function of the lens, which can be made of any light transmission, in particular, polymeric material.
  • the functional head in the housing 502 of the connecting part 50 which has a significantly larger diameter than the diameter of the tubular part 501 of the distal nozzle 2, it is possible to place higher power sources or different spectral composition and an optoelectronic module with a lens system and a photosensitive in the indicated connecting part larger-diameter matrices for receiving and transmitting high-resolution images, in particular equal to or greater than 4K, which allows for reflection of the studied area with a resolution of up to 4096 ⁇ 3072 pixels and higher.
  • the diameter of the lenses placed in it is limited by its diameter, which is determined by the anatomical features of the examined region of the patient’s body, and which for some studies should not exceed 2 mm.
  • the diameter of the connecting part can have a value of from 10 to 20 mm, in one embodiment, from 10 to 15 mm, which makes it possible to accommodate larger power sources and a larger diameter photosensitive matrix in said connecting part.
  • the connector for attaching a removable video endoscopic distal nozzle 2 and the medical diagnostic device of the present invention have been described by the example of a video endoscope with a removable nozzle containing a video head, the present invention can also be used for various types of medical diagnostic devices, for example, a diaphanoscope, devices for fluorescence endoscopy, ultrasound endoscopy, Zo! endoscopy, laser endoscopic surgery and high-frequency surgery.
  • a diaphanoscope devices for fluorescence endoscopy, ultrasound endoscopy, Zo! endoscopy, laser endoscopic surgery and high-frequency surgery.
  • the functional head of the distal nozzle may contain an electrode of an electrosurgical instrument.
  • the functional head may contain a video sensor and an electrode of an electrosurgical instrument to provide visual endoscopic control during surgical intervention.
  • the functional head When used for laser endoscopic surgery, the functional head may comprise a laser source.
  • the functional head of the distal nozzle may contain an ultrasonic emitter.
  • the functional head of the distal nozzle 2 may contain in various combinations sources of infrared radiation, ultraviolet radiation and / or radiation of blue, green and / or other colors.
  • the composition of the radiation sources is determined by the realized distal nozzle 2 by the method of endoscopic diagnosis.
  • the functional head of the distal nozzle 2 may contain only a visible light source.
  • the functional head of the distal nozzle may contain two video sensors.
  • the connector of the present invention can be successfully used in diagnostic devices used in various fields, such as diaphanoscopy, fluorescence endoscopy, ultrasound endoscopy, laser endoscopic surgery, 3D endoccopy and high-frequency surgery.
  • the present invention can be used to create medical diagnostic systems, which include one handle or a control unit and several removable disposable distal nozzles with the same or different characteristics, such as controllability, rigidity and geometric dimensions of the distal nozzle part introduced into the body cavity, the presence of distal end controls, resolution and viewing angle of the video sensor, etc., while the connection of the distal nozzles with the control unit through the connector of the present invention allows, firstly, to place a large number of contact elements with a limited diameter of the connector, o developed by the receiving part and the connecting part, and, secondly, to ensure ease of connection, reduce friction and eliminate or reduce the likelihood of unauthorized closure of pairs of contact elements in the process of connecting the nozzle to the control unit, including the ability to "hot-swap" one nozzle for another without turning off the power of the diagnostic unit control unit.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Endoscopes (AREA)

Abstract

La présente invention concerne un connecteur qui peut s'utiliser pour connecter les composants, notamment des instruments diagnostiques médicaux, utilisés en médecine humaine ou vétérinaire tels que l'endoscope vidéo. Selon l'invention, le connecteur pour la réception et/ou la transmission d'une pluralité de signaux comprend des parties de connexion et de réception ; à la surface externe de la partie de connexion et à la surface interne de la partie de réception sont réalisées en suivant dans une rangée au moins deux ou plus éléments de contact, la ou les rangée(s) passant dans la direction de l'axe longitudinal du connecteur, avec une inclinaison par rapport audit axe, de sorte que chaque élément de contact suivant dans la direction longitudinale du connecteur, l'élément de contact étant décalé par rapport à l'élément de contact précédent dans une direction radiale vers l'intérieur de la partie de connexion et vers l'extérieur de la partie de réception du connecteur. L'invention concerne aussi un instrument médical diagnostique correspondant et son procédé d'utilisation.
PCT/RU2018/050024 2017-02-27 2018-02-27 Connecteur pour instrument médical diagnostique Ceased WO2018156058A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2017106310 2017-02-27
RU2017106310A RU2678409C2 (ru) 2017-02-27 2017-02-27 Медицинский диагностический прибор со съемными дистальными насадками

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PCT/RU2018/050024 Ceased WO2018156058A1 (fr) 2017-02-27 2018-02-27 Connecteur pour instrument médical diagnostique
PCT/RU2018/050023 Ceased WO2018156057A1 (fr) 2017-02-27 2018-02-27 Instrument médical diagnostique à embouts distaux amovibles

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WO (2) WO2018156058A1 (fr)

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RU2705895C1 (ru) * 2019-03-22 2019-11-12 Альберт Акрамович Суфианов Хирургический инструмент для аспирации и ирригации жидкости в операционной полости

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US20080208246A1 (en) * 2007-02-08 2008-08-28 Steve Livneh Modular electrosurgical adaptors and multi function active shafts for use in electrosurgical instruments
WO2011006052A2 (fr) * 2009-07-10 2011-01-13 Axis Surgical Technologies, Inc. Dispositif portatif de diagnostic d’encombrement minimal avec visualisation intégrée à l’extrémité distale

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US9107573B2 (en) * 2012-10-17 2015-08-18 Karl Storz Endovision, Inc. Detachable shaft flexible endoscope
RU2526948C1 (ru) * 2013-06-19 2014-08-27 Общество С Ограниченной Ответственностью "Айсберг" Видеоэндоскоп и комплект видеоэндоскопов

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US20080208246A1 (en) * 2007-02-08 2008-08-28 Steve Livneh Modular electrosurgical adaptors and multi function active shafts for use in electrosurgical instruments
WO2011006052A2 (fr) * 2009-07-10 2011-01-13 Axis Surgical Technologies, Inc. Dispositif portatif de diagnostic d’encombrement minimal avec visualisation intégrée à l’extrémité distale

Also Published As

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RU2017106310A3 (fr) 2018-08-30
WO2018156057A1 (fr) 2018-08-30
RU2017106310A (ru) 2018-08-30
RU2678409C2 (ru) 2019-01-28

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